pitchmcomb.h File Reference

Pitch detection using multiple-comb filter. More...

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Typedefs
typedef _aubio_pitchmcomb_t	aubio_pitchmcomb_t
	pitch detection object
Functions
smpl_t	aubio_pitchmcomb_detect (aubio_pitchmcomb_t *p, cvec_t *fftgrain)
	execute pitch detection on an input spectral frame
uint_t	aubio_pitch_cands (aubio_pitchmcomb_t *p, cvec_t *fftgrain, smpl_t *cands)
	select the best candidates
aubio_pitchmcomb_t *	new_aubio_pitchmcomb (uint_t bufsize, uint_t hopsize, uint_t channels, uint_t samplerate)
	creation of the pitch detection object
void	del_aubio_pitchmcomb (aubio_pitchmcomb_t *p)
	deletion of the pitch detection object

---

Detailed Description

Pitch detection using multiple-comb filter.

This fundamental frequency estimation algorithm implements spectral flattening, multi-comb filtering and peak histogramming.

This method was designed by Juan P. Bello and described in:

Juan-Pablo Bello. ``Towards the Automated Analysis of Simple Polyphonic Music''. PhD thesis, Centre for Digital Music, Queen Mary University of London, London, UK, 2003.

---

Function Documentation

smpl_t aubio_pitchmcomb_detect	(	aubio_pitchmcomb_t *	p,
		cvec_t *	fftgrain
	)

execute pitch detection on an input spectral frame

Parameters:

	p	pitch detection object as returned by new_aubio_pitchmcomb
	fftgrain	input signal spectrum as computed by aubio_pvoc_do

void del_aubio_pitchmcomb

(

aubio_pitchmcomb_t *

p

)

deletion of the pitch detection object

Parameters:

p

pitch detection object as returned by new_aubio_pitchfcomb

aubio_pitchmcomb_t* new_aubio_pitchmcomb	(	uint_t	bufsize,
		uint_t	hopsize,
		uint_t	channels,
		uint_t	samplerate
	)

creation of the pitch detection object

Parameters:

	bufsize	size of the input buffer to analyse
	hopsize	step size between two consecutive analysis instant
	channels	number of channels to analyse
	samplerate	sampling rate of the signal

---